I did a quick search in the forum and didn't come up w much, probably because I'm not a techie. But I am a driver. I drive the hell out of my SC. Its a 92 400. Its a daily driver, its been a daily driver all it's life. I've done two 3000 mile trips here in the western deserts this past year
This is the motor today and what it has always looked like





"The Purple-Bullet"
the last timing belt change was 188,000miles. Today its 288,000miles the change was done in 2008

thanks, Barbary